 |
29p (SW1)
| Date |
M1 |
Diameter |
DC |
PA |
Observer |
| 2003 Sep 03.57 UT |
14.2(16.2)
|
22.0"
|
7/9
|
180/1' |
David Higgins - E14 |
| 0.25m SCT/ccd.... image/photometry via 0.25m
SCT @ f/3.4; SX MX716 ccd @ 752 x 582 pixels, 2"/pixel. 15x120 second
in L, 15x240 second in V and R and 30x240 second in IR72. All
images tracked and stacked and false colour combined. Unfiltered
= L, Johnson V filter = G, Cousins R = R and IR72 = B. Photometry via computer direct
(Astrometrica). |
|
Strong elongated central condensation with bright diffuse coma/tail.
North is Up and East is to the right. Overall
appearance is a hemisphere/fan with the nucleus at the centre of the
straight edge. 2 obvious dust jets are visible 1' in PA 210 and
0.5' in PA 150.
|
|
|
| Date |
M1 |
Diameter |
DC |
PA |
Observer |
| 2003 Sep 21.41 UT |
14.1(16.7)
|
31"
|
8/9
|
198/46" |
David Higgins - E14 |
| 0.25m SCT/ccd.... image/photometry via 0.25m
SCT @ f/3.4; SX MX716 ccd @ 752 x 582 pixels, 2"/pixel. 15x120 second
exposure track and stacked. Photometry via computer direct
(Astrometrica). |
|
Strong elongated central condensation with bright diffuse coma/tail.
North is Up and East is to the right. Tail
extends PA 205 then curves to PA 180 with the appearance of a broad
fan shaped tail in PA120
|
| Date |
M1 |
Diameter |
DC |
PA |
Observer |
| 2003 Sep 30.48 UT |
13.1(16.3)
|
38.2"
|
7/9
|
|
David Higgins - E14 |
| 0.25m SCT/ccd.... image/photometry via 0.25m
SCT @ f/3.4; SX MX716 ccd @ 752 x 582 pixels, 2"/pixel. 6x120 second
exposure tracked and stacked. Photometry via computer direct
(AIP4WIN). |
|
Oval shaped coma not evenly distributed around a strong
central condensation. Breaks in the coma appear at PA 140, PA
160 (a 'V' shaped notch) and at PA 230. Coma very much flatter
and dimmer on the NW side of the nucleus. The edges of the 'V'
shaped notch are brighter than the rest of the coma indicating
possible dust jets.
|
| Date |
M1 |
Diameter |
DC |
PA |
Observer |
| 2003 Nov 13.51 UT |
14.8(16.5)
|
30"
|
7/9
|
34" in PA 160 |
David Higgins - E14 |
| 0.25m SCT/ccd.... image/photometry via 0.25m
SCT @ f/3.4; SX MX716 ccd @ 752 x 582 pixels, 2"/pixel. 30x60 second
exposure tracked and stacked. Photometry via computer direct
(AIP4WIN). |
Nucleus is quite stellar in
appearance with small diffuse coma. Evidence of dust jet still
visible 34" in PA 176. Possible second jet 30" in PA
211. Small tail is short and fan shaped.
|
| Date |
M1 |
Diameter |
DC |
PA |
Observer |
| 2003 Dec 06.46 UT |
14.3(16.9)
|
26.8"
|
2/9
|
None visible |
David Higgins - E14 |
| 0.25m SCT/ccd.... image/photometry via 0.25m
SCT @ f/3.4; SX MX716 ccd @ 752 x 582 pixels, 2"/pixel. 30x60 second
exposure tracked and stacked. Photometry via computer direct
(AIP4WIN). |
Small bright diffuse central
condensation and a non uniform coma just visible above the moonlight
|
|
|
